作　　者： ; ;

机构地区： 上海交通大学机械与动力工程学院振动冲击噪声国家重点实验室

出　　处： 《声学学报》 2005年第2期184-188,共5页

摘　　要： 针对宽带噪声的频谱特点和人耳听觉的掩蔽特性,提出了一种噪声掩蔽的等效原则,以及一种新的烦恼度指数的计算方法。在采用时频分析的方法,结合统计学规律,辨识出噪声中致人烦恼的频率成份之后,利用该烦恼度指数可度量各频率成份的烦恼程度,从而建立了一种噪声品质评估模型。试验研究的结果表明:基于掩蔽特性的噪声品质评估模型可以快捷而准确地识别噪声中烦恼的频率成份,并与人耳主观辨识的结果具有良好的一致性。 An equivalent principle of noise masking and a noise index are suggested in this presentation, which are based on the characteristics of noise with wide frequency band and masking effects of auditory sensation. With the combination of time-frequency analysis and statistics theories, the disgusting component leading to annoyance can be distinguished from overall noise. The annoy index can be used to indicate the disgusting degree of individual frequency component. Then, a procedure of evaluating noise quality for the noise with wide frequency band is established. The experimental study shows that the presented model can be used to identify the annoy frequency components from overall noise promptly and accurately, and the results greatly agree with the subjective evaluation.

关 键 词： 品质评估 评估模型 宽带噪声 等效原则 计算方法 时频分析 试验研究 烦恼度 声品质 声掩蔽 统计学 成份 频率 一致性 人耳 指数 辨识 频谱

领　　域： [电子电信] [电子电信] [轻工技术与工程]